Two numbers from this year don't agree with each other. The Ferrari Enzo gained 109 percent in a quarter. The index that tracks $40,000 classics moved zero.

"The kids fit" is not a fact. It's a date. Legroom you can negotiate. Headroom you can't, and the sitting-height growth spurt arrives late and fast, usually in the same year your money is deepest in the car. Here's how to turn inches of clearance into a number of birthdays, before you buy.

Cold doesn't turn your tire pressure light on. Five months of seepage does. The cold just takes the blame for the last five PSI.

The car you should buy is determined by six questions that have nothing to do with the car.